Stand for moving-picture machines



, N'WER; n :1S-[AND FOR MOVING PICTURE MACHINES. APPLICATION HLgD o`cT.12, 1915.

1,337,267, Patented Apr.2o,1920.

3' SHEETS-SHEET l.

m y N l N. POWER.. l STAND FoRlNlovlNG PICTURE MACHINES.

APPLIQATION FILED OCT. l2. i915.

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- Patented Apr. zo, 1920.

N. POWER.

. STAND FOR MOVING PICTURE MACHINES.

APPLICATION FlLED ocT.-12, 1915.`

4 3 SHEETS-SHEET 3.

Patented Apnzo, 1920.

` mechanism may vprovide a stand of this accurate adjustments may j embodying a motor TES PATENT OFFTCE.

NICHOLAS POWER, OE BROOKLYN, NEW

COMPANY, OE NEW YORK, N. Y., A

YORK, ASSGNOR TO NICHOLAS lIPOVJEB,

CORPORATION OF DELAWARE.

STAND EOE MOVING-PICTURE MACHINES.

Specification of Letters Patent.

Patented i-Sipr. 20, 1920.

Applcationfiled October 12, 1915. Serial No. 55,409.

To all/whom t may concern:

Be it known that l, NICHOLAS PowEn, a citizen of the United States, and a resident of Brooklyn, in the county of Kings and State of New York, have invented new and useful lmprovements in Stands for Moving- Picture Machines, of which the following is a specification. v

This invention relates to motion picture apparatus and has for its principal object to `provide an improved stand and motor driving connections for the projecting` mechanism whereby the position of 'the be adjusted to any desired angle according to the altitude and direction of the apparatus above the screen on'whiclr the picture is projected.

f A further object of the invention is to character in which be effected and the machine locked in its adjusted position without tools of any kind and while the machine is in operation, whereby the operator Vmay determine by actual observation the best position for the picture while making the adjustment.

. A further object of the invention is,to

provide an apparatus in which the adjustment and-locking of the stand may be effected with one hand, leaving the other free to control .the machine, and in which-the machine Ais perfectly steady and held against vibration in all positions of adjustment and also while the adjustment is being effected.

A further object of the invention is to provide an apparatus of the class described drive having a change speed gearing supported on the iiXed part of the frame withthe projecting mechanism and the projecting lantern on the adjustable frame, so arranged that the motor and change speed gear may remain in horizontal position during the adjustment of the apparatus to ive the axis of projection the desired ang e.

Further objects of the invention will be apparent from the following description and drawings" wherein is illustrated a preferred embodiment of my invention.

In the said drawings, Figure elevation of my improved stand,

l is a side Fig. 2 is an end elevation .looking` from the right of Fig, 1;,

Fig. 3 is a vertical section onenlarged scale through the center of the reel shaft.

Fig. 4e is a detail of the locking device.

Referring tothe said drawings, 1 indicates the main stationary or base part of the frame which may be cast in a single piece and embodies an upper circular portion 2 having a central bore for the hub 3 for the adjustable part #l vof the main frame. rThe part @L has a circular lower portion da corresponding with the part 2 of the fixed frame member, -and the part 2 iS provided with annularengaging friction faces as indicated at 5. Setin the face of the part et j and equally spaced around the hub 3 are bolts 6 projecting through arcuate slots in the part 2. The two parts are yieldingly clamped together by means of washers 7 on the bolts which are pressedI against the ad,- jacent face of the part 2 by means of stil springs S surrouinling` the bolts between the washers and their heads. VVThe springs 8 are stiff enough to take up any lost motion in the pivotal connection between the two parts and also to cause the friction faces to offer considerable friction-al resistance to their relative adjustment.

rlhe bottom of the part l consists of a substantially horizontal web9 having attached vto its under face a hanger l0 for the driv- 'which is provided with two sockets to adjustably receive the legs la the sockets being set at sutlicient angle to cause a large spread of thelegs whereby the adjustment of the machine will not shift the center of gravity of the 'apparatus materially away from over the center' of the area of support. Each leg 14 is individually adjustable in its socketwhereby the machine as a whole may be lowered and raised by equally adjusting the legs, or the stationary part of the machine frame may be adjusted by proper relative adjustment of the several legs to commodate irregular or inclined floors without affecting the angle of projection.

The adjustable part l of the frame comside 15 forms the support for the projectingy lmechanism or .machine head 16 mounted near one end of the uppe'r face. The two sides of thel square form a bracketto receive the magazine 17 for the film reel on which the lm is wound after-it ,passes -through `the projecting machine. The reel is supported and driven through ashaft 18 supported in a ball bearing adjacent the journal 5`and' passing through the hub 3, whereby the adjustment of the frame does not alter the position of; the shaft. l shaft projects beyond the face of the part2 and'is provided with a driving pulley 2O loose on' the shaft and having a clutch face 21 engaging a complementaryclutch'member 22 fast to the shaft the two clutch members being held in frictionall engagement by means of a springA 23. engaging the outer face of the pulley and maintained under the desired tension by the adj usting-andlocking nuts 24 onthe end of the shaft.

Projecting from the rear wall of the hollow square which supports the magazine near the corner thereof are the track rods. 25 forreceiving the lamp house carriageA 26. TheH lamp house carriage is adjustable along. the rods in the unsual manner and comprises'a pair of horizontal rods 27 on which the lamp house is adjustably mounted to thereby provide both lateral and-longitudinal 'movement for the lamp. The

outer ends of the rods 25 are Supported by diagonal braces -28 extending to the lower corner of the rear side of the square, which form a convenient support for the switch box 29 containing the switches for controlling the electric motor and the project-l ing lamp. i

i For effecting therelative movement of the two parts of the frame to adjust the part 4 there is provided a screw shaft 30 -pivotally attached' to the rear leg bracket 13 and projecting through a threaded bearing 31 trunnioned onv the rear wall of the square. rl`he shaft`30 is provided with a handwheel 32 whereby it may be rotated to effect the. adjustment. The frictional engagement of the two. frame `parts under the tension of the springs 8 will hold-the part Y 4 against all vibration so thaty a single clamp'is sufficient to rigidly lock the parts I -together after the desired position of the picture has been obtained. AThis clamp com- Y prises a bolt 34 working ina bearing in an ear 35 projecting 4downwardly from the ydiagonal brace 28. The head of the bolt is square and lies in achannel formed on the innerface of an arcuate guide bar 36 projecting upwardly from the rear end of The the frame is being adjusted.

the stationary part of the frame and co11- centric with the center of adjustment. The

bar 3G is slotted to receive the shank of the bolt 34 and threaded on the end of the bolt is a hand wheel .37 whosehub acts as a clamp nut to clamp the ear and bar'together in any desired adjusted position.

,The brace 28 is formed by spaced bars as shown more particularly in Fig. 2 to avoid interference with the bar 3G when the rear end of the'l frame is'lowered. By this arrangement the two adjusting wheels are conveniently positioned to be simultanef ously grasped by the operator, or for either to be easily reached if the adjustment is effected while the machine is in operation, by the operator in his normal position at the machine.

`The change speed gearl comprises a frictionalwheel on the` motorshaft having a peripheral driving face adapted to engage driven (friction disk 38,

the flat face of the which ,is supported in the carriage 39 to be adjustable in parallelism vwith the motor shaft to alter the point of engagement of `the diskr and Wheel with corresponding` part of the frame approximately level. The clamping nut is then released by means of the hand wheel 37 and the hand wheel 32 operated in the pro er direction' .to shift the upper part of tieA frame in thel bearing-`at the reel-shaft to raise or klower theilluminated area onthe screen, as .may be desired.

This movement is resisted by the frictional engagement of the vtwo frame parts under tension of the springs 8, and as the screw shaft of the hand wheel 32 has a thread of low pitch, an exact adjustment can be had with the 'one operation. During thevadjust'ment, the machine maybe operated to get the effect of theactual picture in various positions of adjustment, friction of the -parts under the pres- \sure of the springs being sufficient to hold the'machine against vibration even while When the picture has been brought to the desired position, the two frame parts are clamped rigidly together by means of the 'hand wheel 7.

The double adjustment permitted by the adjustable legs and the two-part frame allows the lower part of the frame to be set level, even on an uneven floor, whereby the bearings ofthe motor carried by the base are relieved of the thrust of the' weight of the -motor which occurs when the motor is on the adjustablelpart of the frame.

The arrangement of the center of adjustment at the point shownA effects a substantial balancing of 'the weight carried by the adjustable frame at the angle of inclination which is most common in the usual picture theater installation, the machine head and film magazines being obviparatus.

l said parts in any position of Arelative ad? 2. In a motion picture projecting apparatus, a supporting frame comprising a base part, adjustable means for supporting said base part, a machine carryingpart, a motion picture projecting apparatus mounted on said part, a pivotal connection between said parts for permitting their relative angular adjustment, means for frictionally opposing such adjustment, meansl for locking justment, a motor for driving said apparatus mounted on'said base-part and driving connections between saidmotor and said apparatus.

3. In a' motion picture projecting apparatus, a supporting frame comprising a base part, and a machine carrying part, a motion picture projecting apparatus Amounted on saidpart, a pivotal connection between said parts for permitting their relative an-A gular adjustment, arotatable adjusting device for effectingsuch adjustment, means for locking said parts in any position of relative adjustment, a motor for driving said apparatus mounted on said base part and driving connections between said motor and said apparatus.

it. In a motion picture projecting apparatus, a supporting frame comprising a base part,jand a machine carrying-part, a motion pi ture projecting apparatus mounted on sai part, a pivotalconnection between said parts forl permittingtheir relative angular adjustment, a threaded shaft having a bearing on one of said parts and provided with a nut attached to said other part for effecting such adjustment, means for locking said parts :in an position of relative adjustment, a motor or driving said apparatus mounted on said base part and driving connections between said motor and said apparatus.

5. In a motion picture projecting apparatus,` asupporting frame comprising a base part, and a machine carrying part, a motion picture projectingapparatus mounted on said part, a pivotal-connection between said parts `for permitting their relative angular adjustment, a threaded shaft having a bearing pivoted on one of said parts and 'provided with a nut pivotally attached to said other part for effecting suchadjustment, means for locking said parts in any position of relative adjustment, amotor for driving vsaid apparatus mounted on said base part and driving connections between said motor and said apparatus.

6. In a motion pictureprojecting apparatus, a supporting frame comprising a stationary base portion, legs adjustably supporting said base portion, a driving motor mounted on the base portion,- an'upper por- 'tion supporting the projecting mechanism,

a pivotal connection between the two parts permitting relative angular adjustment, and

a power transmitting connection between said motor and sai'd mechanism.

7. In a motion picture projecting machine a supporting frame comprising a base part, a machine-carryigg' part mounted for pivota'l movement on said base part for adjustment in a vertical plane, a motion picture projecting machine mounted o n said machine-carrying part, a driving motor mounted o'n said base part, driving connections between said machine and motor, and means j forfrictionally opposing relative movement of said parts comprising engaging surfaces on said two parts, and means for pressing saidsurfaces together.

8. In a motion picture proj ectingmachine, a supporting frame comprising a base part, a machine-carrying part mounted for pivotal movement on said base part for adjustment in a vertical plane, a motion picture projecting'machine mounted on said machine-carrying-part, a driving motor mounted on said base-part, driving connections between said machine and motor, means for frictionally opposing relative. movement of said parts comprising engaging plane surfaces at right angles -to the axis of adjustment, and resilient means for pressing said surfaces'together.

Signed at New York city, in the county of New York and State of New York, this 15th day lof September, 1915.

NICHOLAS POWER.

lVitnesses J. S. MERRETT, ARTHUR J'. LANG. 

